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HomeMy WebLinkAboutNC0003468_Approval Repair-Scope 5_20150519 • ATA NCDENR North Carolina Department of Environment and Natural Resources Pat McCrory Donald van der Vaart Governor Secretary Certificate of Approval May 8, 2015 Mr. John Elnitsky Vice President Duke Energy P.0 Box 1321, DEC 22C Charlotte,NC 28201-1007 RE: Approval to Repair— Scope 5 RECEIVEDIDENRIDWR Dan River Active Primary Ash Basin Dam Rockingham County MAY 1 9 State Dam ID: ROCKI-237 Water Uua ny Permitting Sectior Dear Mr. Elnitsky: This is in response to your submission dated January 16, 2015,received on May 1, 2015 of plans, specifications and design data dated January 16, 2015 for repair of the subject dam in compliance with the Dam Safety Law of 1967. This dam is of high hazard classification. The plans, specifications and design data submitted were prepared under the supervision of Mr. Joshua M. Bell, PE of AMEC Environment& Infrastructure, Inc. Scope 5 General Work Description: Repair of localized ponding on the downstream face of dam and drainage relief at brick face of 48-inch outlet pipe plug. This letter constitutes approval of the proposal to repair the subject dam according to the plans and specifications received by this Division on May 1, 2015 with the following stipulations: 1. Project construction shall be supervised by Mr. Joshua M. Bell, PE. Mr. Joshua M. Bell, PE shall be responsible for field observation of construction as necessary to ensure compliance with approved plans. 2. During construction,the Division of Energy, Mineral, and Land Resources may require such progress reports as are deemed necessary. 3. In accordance with GS 143-215.29 and NCAC 15A-2K .0203, .0212, .0215, and .0216, within 30 days of completion of the project, Mr. Joshua M. Bell, PE shall inspect the completed work and upon finding that the work has been done as specified and the dam is safe,shall file with the Division of Energy, Mineral, and Land Resources two sets of record Division of Energy, Mineral, and Land Resources Energy Section•Geological Survey Section•Land Quality Section 1612 Mail Service Center,Raleigh,North Carolina 27699-1612.919-707-9200/FAX:919-715-8801 512 North Salisbury Street, Raleigh, North Carolina 27604•Internet:http://portal.ncdenr.org/webllr/ An Equal Opportunity\Affirmative Action Employer—50%Recycled 110%Post Consumer Paper Mr. John Elnitsky Dan River Active Primary Ash Basin Dam Approval to Repair—Scope 5 ROCKI-237 May 8, 2015 Page 2 of 3 drawings and a certificate stating that the work has been completed in accordance with approved plans, specifications and other requirements. 4. In accordance with GS 143-215.30 and NCAC 15A-2K.0220,final written consent must be issued by the Director of the Division of Energy,Mineral,and Land Resources for use of this dam pursuant to these repairs. 5. An operation and maintenance(O&M)plan are required for all high hazard dams. The O&M plan should address routine maintenance, frequency of piezometer readings,frequency of inspections by the owner or the owner's representative, and annual operation of the bottom drain to ensure that it is functional. The O&M plan must be received prior to issuance of final written consent for use of this dam pursuant to these repairs. 6. This approval does not convey the right to access the private property of others. Any required access to perform the approved work must be secured prior to initiation of construction activities. 7. Water control activities required to complete approved repairs which involve diversion and discharge of reservoir waters to discharge points not covered by an existing NPDES permit, or which utilize procedures that are not approved by an existing NPDES permit, must receive approval from the Division of Water Resources prior to implementation. 8. You must notify Mr. Matthew Gantt, PE, Regional Supervisor, Land Quality Section, 450 West Hanes Mill Road, Suite 300, Winston-Salem,North Carolina 27105,telephone number (336) 776-9800 ten days before the start of construction. The Army Corps of Engineers and the Water Resources Division of this Department should be contacted to determine it additional permits are required. Also,the erosion and sediment control program having jurisdiction should be contacted to determine permit requirements. In any case, sediment must be prevented from entering the waters of the state or flowing onto neighboring property. For assistance you may contact the Winston-Salem Regional Office at(336) 776-9800 or a staff member of the Dam Safety Program in the Raleigh Central Office at telephone number(919) 707-9220. Since ly, y E. avis, PE, CPM Dir cto TED/smm/bsc r ' Mr.John Elnitsky Dan River Active Primary Ash Basin Darn Approval to Repair—Scope 5 ROCKI-237 May 8,2015 Page 3 of 3 cc: Mr.Joshua M. Bell,PE,Design Engineer Mr.Matthew Gantt,PE, Land Quality Regional Engineer Mr. Jeff Poupart,Division of Water Resources Mr.Randy Hart,Duke Energy File name: ROCKI-237 20150508_COAR-Scope 5_Dan River Active Primary Ash Basin Dam